Then edit javascripts/camera-control.js . This is the biggest mod of the OP's work. Notice I am still using the same captureTimer method name but its contents are different, and it calls a new method, captureTimerLoop, and there are two class properties used. If you are using something other than 10 seconds, make sure you change both of the 10's here, so that all three 10's are identical. If I knew a way to call a public class property in the view, this could be a single config var, ah well.

For stylesheets/camera.css , I merely added a font color of white so the seconds countdown contrasts nicely. I tried to place the count in the center, but it messed up the neighboring images, and I rather like the way it looks off on the far upper left.